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am1weekly_2000-281_2000-287

Mission Operations Days: 2000/281 to 2000/287
October 07, 2000 00:00:00 GMT to October 13, 2000 00:00:00 GMT


Terra Spacecraft and MODIS Instrument Status:

Terra (AM-1) is in Normal Ops Mode
MODIS is in Science Mode - A Side
ComponentState(s)Comment
BlackbodyA On (290 K); B OffNominal
Calibration ElectronicsA On; B OffNominal
Control ProcessorA On; B OffNominal
Nadir DoorUnlatched, OpenNominal
Space View DoorUnlatched, OpenNominal
Solar Diffuser DoorUnlatched, ClosedNominal
FDDI FormatterA On; B OffNominal
FDDI PortA On; B OffNominal
FIFO Memory#1 & #2 On; #3 & #4 OffNominal
Format ProcessorA On; B OffNominal
Power Supplies#1 On, #2 OffNominal
PV VIS FPAA On; B OffNominal
PV NIR FPAA On; B OffNominal
PV SMIR FPAA On; B OffNominal
PV LWIR FPAA On; B OffNominal
PC LWIR FPAA On; B OffNominal
RC Outgas HeatersAll Off (CS, IS, OS)Nominal
RC LWIR FPA HeaterOn (83 K)Nominal
RC SMIR FPA HeaterOffNominal
Scan AssemblyA On; B OffNominal
SDSMA Off; B OffNominal
SRCAA Off; B OffNominal
PS1 Survival HeaterEnabledNominal
PS2 Survival HeaterEnabledNominal
Timing GeneratorA On; B OffNominal
Flight SoftwareRev BD + 5 sets of patches
  • FR Error Counting and Statistics (2 patches)
  • FR Band 14H Gain Change (10 commands)
  • FR Band 24 Gain Change (10 commands)
  • FR Band 25 Gain Change (10 commands)
  • FR Band 27 Gain Change (10 commands)
Nominal
Inhibit Ids SetNoneNominal
TMONs Enabled66, 67, 68Nominal

This Week’s Completed MODIS Activities:

Saturday, October 7, 2000

None

Sunday, October 8, 2000

None

Monday, October 9, 2000

None

Tuesday, October 10, 2000

None

Wednesday, October 11, 2000

None

Thursday, October 12, 2000

None

Friday, October 13, 2000

None

This Week's Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

Saturday, October 14, 2000

None

Sunday, October 15, 2000

None

Monday, October 16, 2000

2000/290 21:56:02-22:53:33 ATC SRCA Full Spatial

Tuesday, October 17, 2000

2000/291 14:29:51 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
2000/291 15:02:17 ATC Set Formatter to Day Rate
2000/291 15:02:19 ATC Set SCIABNORM Flag to ABNORM
2000/291 15:02:21 ATC PC DC Restore to OFF
2000/291 15:02:23 ATC PV DC Restore to OFF
2000/291 15:02:25 ATC Sector Rotation to -3072 (EA to SV and OBCs)
2000/291 15:08:55 ATC Sector Rotation to Zero (Normal)
2000/291 15:08:57 ATC PC DC Restore to ON
2000/291 15:08:59 ATC PV DC Restore to ON
2000/291 15:09:01 ATC Set SCIABNORM Flag to NORM
2000/291 15:09:03 ATC Set Formatter to Night Rate
2000/291 15:26:03 ATC Move Formatter to Day later by 3:23 to ensure 50/50 day/night

2000/291 15:?? Real-Time Set SMIR Itwk/Vdet to 79/110

2000/291 16:08:45 ATC Move Formatter to Night ahead by 3:23 to ensure 50/50 day/night
2000/291 16:41:37 ATC Set Formatter to Day Rate
2000/291 16:41:39 ATC Set SCIABNORM Flag to ABNORM
2000/291 16:41:41 ATC PC DC Restore to OFF
2000/291 16:41:43 ATC PV DC Restore to OFF
2000/291 16:41:45 ATC Sector Rotation to -3072 (EA to SV and OBCs)
2000/291 16:48:15 ATC Sector Rotation to Zero (Normal)
2000/291 16:48:17 ATC PC DC Restore to ON
2000/291 16:48:19 ATC PV DC Restore to ON
2000/291 16:48:21 ATC Set SCIABNORM Flag to NORM
2000/291 16:48:23 ATC Set Formatter to Night Rate
2000/291 17:04:56 ATC Move Formatter to Day later by 3:23 to ensure 50/50 day/night

2000/291 17:?? Real-Time Set SMIR Itwk/Vdet to 110/226

Wednesday, October 18, 2000

2000/292 19:?? Real-Time Set SMIR Itwk/Vdet to 79/110
2000/292 20:05:00 ATC Blackbody to 315K
2000/292 20:05:30 ATC Blackbody duty cycle to FULL

Thursday, October 19, 2000

2000/293 03:00:00 ATC Blackbody to 270K
2000/293 03:00:30 ATC Blackbody duty cycle to THIRD
2000/293 22:00:00 ATC Blackbody to 290K

Friday, October 20, 2000

2000/294 13:?? Real-Time Set SMIR Itwk/Vdet to 110/226

Maneuvers:

Two Roll maneuvers are planned for October 17th. The first maneuver will be roll the S/C - 12.5496 degrees for data collection from2000/ 291 15:02:25 to 2000/291 15:08:55 with SMIR Itwk/Vdet set to 110/226. The second maneuver will roll the S/C -11.8642 degrees for data collection from 16:41:45 to 16:48:15 with SMIR Itwk/Vdet set to 79/110.

MODIS Anomalies:

Continued monitoring for formatter errors and loss of cooler margin.

Attached to this report is a spreadsheet listing the times, addresses, formatter temperature, satellite ground track, and space craft day/night position for each of the formatter events that have occurred since DOY 256.

General Instrument Comments:

MODIS is in Science Mode on the A-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches.

MODIS Telemetry Trends:

The Radiative Cooler intermediate stage temperature has slowly been increasing since approximately day 240. During this time the LWIR focal plane heater margin has been decreasing. The IOT is continuing to trend these telemetry mnemonics.

Non-MODIS Significant Events:

There have been indications that Solar Array Circuit #10 failed at approximately 200/268 15:07:20. Terra still has a power margin so this failure should not impact operations.

Limited Life Item Status:

SRCA 10W Lamp #1: 173.5 of 500 hours
SRCA 10W Lamp #2: 135.9 of 500 hours
SRCA 10W Lamp #3: 145.1 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours

SRCA 1W Lamp #1: 556.1 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours

Solar Diffuser Door: 1429 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements